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U CODE FAMILY

Network code references — Page 2.

Communication and network diagnostic references. A communication code does not identify a failed module by itself.

1,228 code references in network

Generic OBD-II
U008F

Vehicle Communication Bus G (-) Low

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Generic OBD-II
U0090

Vehicle Communication Bus G (-) High

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Generic OBD-II
U0091

Vehicle Communication Bus G (-) shorted to Bus G (+)

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Generic OBD-II
U0092

Vehicle Communication Bus H

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Generic OBD-II
U0093

Vehicle Communication Bus H Performance

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Generic OBD-II
U0094

Vehicle Communication Bus H (+) Open

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Generic OBD-II
U0095

Vehicle Communication Bus H (+) Low

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Generic OBD-II
U0096

Vehicle Communication Bus H (+) High

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Generic OBD-II
U0097

Vehicle Communication Bus H (-) Open

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Generic OBD-II
U0098

Vehicle Communication Bus H (-) Low

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Generic OBD-II
U0099

Vehicle Communication Bus H (-) High

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Generic OBD-II
U009A

Vehicle Communication Bus H (-) shorted to Bus H (+)

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Generic OBD-II
U009B

Vehicle Communication Bus I

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Generic OBD-II
U009C

Vehicle Communication Bus I Performance

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Generic OBD-II
U009D

Vehicle Communication Bus J

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Generic OBD-II
U009E

Vehicle Communication Bus J Performance

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Generic OBD-II
U0100

Lost Communication With ECM/PCM A

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Generic OBD-II
U0101

Lost Communication With TCM

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Generic OBD-II
U0102

Lost Communication With Transfer Case Control Module

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Generic OBD-II
U0103

Lost Communication With Gear Shift Control Module A

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Generic OBD-II
U0104

Lost Communication With Cruise Control Module

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Generic OBD-II
U0105

Lost Communication With Fuel Injector Control Module

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Generic OBD-II
U0106

Lost Communication With Glow Plug Control Module 1

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Generic OBD-II
U0107

Lost Communication With Throttle Actuator A Control Module

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Generic OBD-II
U0108

Lost Communication With Alternative Fuel Control Module

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Generic OBD-II
U0109

Lost Communication With Fuel Pump Control Module A

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Generic OBD-II
U010A

Lost Communication With Exhaust Gas Recirculation Control Module A

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Generic OBD-II
U010B

Lost Communication With Exhaust Gas Recirculation Control Module B

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Generic OBD-II
U010C

Lost Communication With Turbocharger/Supercharger Control Module A

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Generic OBD-II
U010D

Lost Communication With Turbocharger/Supercharger Control Module B

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Generic OBD-II
U010E

Lost Communication With Reductant Control Module

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Generic OBD-II
U010F

Lost Communication With Air Conditioning Control Module

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Generic OBD-II
U0110

Lost Communication With Drive Motor Control Module A

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Generic OBD-II
U0111

Lost Communication With Battery Energy Control Module A

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Generic OBD-II
U0112

Lost Communication With Battery Energy Control Module B

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Generic OBD-II
U0113

Lost Communication With Emissions Critical Control Information

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Generic OBD-II
U0114

Lost Communication With Four-Wheel Drive Clutch Control Module

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Generic OBD-II
U0115

Lost Communication With ECM/PCM B

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Generic OBD-II
U0116

Lost Communication With Coolant Temperature Control Module

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Generic OBD-II
U0117

Lost Communication With PTO Control Module

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Generic OBD-II
U0118

Lost Communication With Fuel Additive Control Module

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Generic OBD-II
U0119

Lost Communication With Fuel Cell Control Module

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Generic OBD-II
U011A

Lost Communication With Exhaust Gas Sensor Module A

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Generic OBD-II
U011B

Lost Communication With Rocker Arm Control Module A

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Generic OBD-II
U011C

Lost Communication With Rocker Arm Control Module B

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Generic OBD-II
U011D

Lost Communication With All Wheel Drive Control Module

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Generic OBD-II
U011E

Lost Communication With Throttle Actuator B Control Module

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Generic OBD-II
U011F

Lost Communication With V2X Module

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Generic OBD-II
U0120

Lost Communication With Starter / Generator Control Module

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Generic OBD-II
U0121

Lost Communication With Anti-Lock Brake System (ABS) Control Module A

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Generic OBD-II
U0122

Lost Communication With Vehicle Dynamics Control Module

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Generic OBD-II
U0123

Lost Communication With Yaw Rate Sensor Module

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Generic OBD-II
U0124

Lost Communication With Lateral Acceleration Sensor Module

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Generic OBD-II
U0125

Lost Communication With Multi-axis Acceleration Sensor Module A

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Generic OBD-II
U0126

Lost Communication With Steering Angle Sensor Module

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Generic OBD-II
U0127

Lost Communication With Tire Pressure Monitor Module

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Generic OBD-II
U0128

Lost Communication With Park Brake Control Module

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Generic OBD-II
U0129

Lost Communication With Brake System Control Module A

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Generic OBD-II
U012A

Lost Communication With Chassis Control Module A

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Generic OBD-II
U012B

Lost Communication With Chassis Control Module B

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Generic OBD-II
U012C

Lost Communication With Active Vibration Control Module

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Generic OBD-II
U012D

Lost Communication With Generator A Control Module

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Generic OBD-II
U012E

Lost Communication With Camshaft Position Control Module

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Generic OBD-II
U012F

Lost Communication With Generator B Control Module

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Generic OBD-II
U0130

Lost Communication With Steering Effort Control Module

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Generic OBD-II
U0131

Lost Communication With Power Steering Control Module A

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Generic OBD-II
U0132

Lost Communication With Suspension Control Module A

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Generic OBD-II
U0133

Lost Communication With Active Roll Control Module

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Generic OBD-II
U0134

Lost Communication With Power Steering Control Module - Rear

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Generic OBD-II
U0135

Lost Communication With Differential Control Module - Front

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Generic OBD-II
U0136

Lost Communication With Differential Control Module - Rear

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Generic OBD-II
U0137

Lost Communication With Trailer Brake Control Module

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Generic OBD-II
U0138

Lost Communication With All Terrain Control Module

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Generic OBD-II
U0139

Lost Communication With Suspension Control Module B

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Generic OBD-II
U013C

Lost Communication With Accelerator Pedal Module

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Generic OBD-II
U013D

Lost Communication With Vacuum Sensor A

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Generic OBD-II
U013E

Lost Communication With Vacuum Sensor B

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Generic OBD-II
U013F

Lost Communication With Pedestrian Alert Control Module

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Generic OBD-II
U0140

Lost Communication With Body Control Module

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Generic OBD-II
U0141

Lost Communication With Body Control Module A

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Generic OBD-II
U0142

Lost Communication With Body Control Module B

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Generic OBD-II
U0143

Lost Communication With Body Control Module C

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Generic OBD-II
U0144

Lost Communication With Body Control Module D

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Generic OBD-II
U0145

Lost Communication With Body Control Module E

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Generic OBD-II
U0146

Lost Communication With Serial Data Gateway Module A

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Generic OBD-II
U0147

Lost Communication With Serial Data Gateway Module B

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Generic OBD-II
U0148

Lost Communication With Serial Data Gateway Module C

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Generic OBD-II
U0149

Lost Communication With Serial Data Gateway Module D

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Generic OBD-II
U014A

Lost Communication With Battery Energy Control Module C

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Generic OBD-II
U014B

Lost Communication With Hybrid/EV Battery Inductive Charging Module

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Generic OBD-II
U014C

Lost Communication With Battery Energy Control Module D

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Generic OBD-II
U014D

Lost Communication with Mirror Control Module B

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Generic OBD-II
U014E

Lost Communication With Multi-axis Acceleration Sensor Module B

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Generic OBD-II
U0150

Lost Communication With Serial Data Gateway Module E

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Generic OBD-II
U0151

Lost Communication With Restraints Control Module

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Generic OBD-II
U0152

Lost Communication With Side Restraints Control Module - Left

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Generic OBD-II
U0153

Lost Communication With Side Restraints Control Module - Right

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Generic OBD-II
U0154

Lost Communication With Restraints Occupant Classification System Module

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Generic OBD-II
U0155

Lost Communication With Instrument Panel Cluster (IPC) Control Module

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Generic OBD-II
U0156

Lost Communication With Information Center A

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These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.